Tools Portal
Browse Finite Field tools by category and open each workflow directly in the browser.
Filter by tool name, keyword, or format.
197 tools
Fast, private, and purpose-builtNewline Compress
Collapse consecutive blank lines while preserving single line breaks. Keep up to one blank line, remove all blank lines, treat whitespace-only lines as blank, and export in LF or CRLF.
Hyphen / Dash Normalizer
Normalize hyphens, en dashes, em dashes, minus signs, and Japanese long sound marks with structure-aware protection for URLs, dates, versions, CLI flags, and code.
Punctuation Converter
Normalize punctuation, quotes, spacing, and symbols in one click. Includes exclusion rules for URLs/emails/code/numbers, change highlights, preset history, and settings-only share links.
Whitespace Normalizer
Normalize full-width spaces, NBSP, TAB, and repeated spaces. Includes single-line cleanup, multiline cleanup, code-safe protection, and multilingual no-break space handling.
HTML to Text
Paste HTML to remove tags and convert it into readable text with clean paragraphs and list line breaks. Script/style are excluded, and HTML entity decoding is optional.
Regex Tester
Test regular expressions instantly in your browser. Highlight matches, inspect capture groups, and verify replacement results. Supports flag toggles (g/i/m). JavaScript regex engine.
Cron Descriptor
Convert cron expressions into readable descriptions with 5/6/7-field support and timezone handling. Also shows upcoming N run times.
Sort Lines Tool
Sort pasted lines in natural, numeric, or dictionary order. Supports blank-line removal, dedupe, locale selection, and trimming line edges. Everything runs in your browser.
Duplicate Line Remover
Remove duplicate lines from pasted lists with keep-order, ascending/descending sort, case matching, trim, and blank-line options. Useful for multilingual text cleanup and quick copy/export.
HMAC Generator
Compute HMAC-SHA256 safely in your browser. Keys and messages are never sent or stored. Supports Text/Hex/Base64 input and Hex/Base64 output formats.
Full-width / Half-width Converter
Convert full-width and half-width text in your browser. Supports alnum, symbols, and katakana in both directions, with category toggles, diff preview, URL/code protection, and settings-only share links.
JWT Decoder
Paste a JWT to decode header/payload instantly. No signature verification is performed. exp/iat/nbf are shown as Unix time and datetime (UTC/local).
Unix Time Converter
Convert Unix time (seconds/milliseconds) to date-time and date-time to Unix time. Auto-detects 10/13 digits, supports Local/JST/UTC, ISO 8601 output, share link, history, and batch conversion.
Timezone Converter
Convert date and time between JST, UTC, and IANA time zones. Includes day-rollover highlights, batch conversion, copy-ready formats, and shareable URLs.
ETA Calculator
Calculate ETA from departure date-time, distance, average speed, and breaks. Supports km/mi/nm, km/h/mph/kn, time-zone differences, rollover labels, and shareable URLs for global use.
Transport CO2
Estimate transport CO2e from shipment weight, distance and transport mode factors. Supports road, rail, ocean and air legs, plus share URLs and CSV export.
Dim Weight Calculator
Calculate dimensional weight from L×W×H and a carrier divisor, compare it with actual weight, and show chargeable weight. Supports 5000/6000/139/166, custom divisors, metric and imperial units, quantity, rounding, and share URLs.
Packing Material Calculator
Estimate boxes required, corrugated area, tape length, and cushioning volume from box count and box size. Supports metric and imperial units, box style, sealing pattern, fill ratio, share URLs, and secondary units.
Freight Class Helper
Calculate density from dimensions and weight, then estimate freight class with the NMFC density scale effective July 19, 2025. Supports metric and imperial input, boundary warnings, share URLs, and a density-only disclaimer.
Pallet & Container Loading Calculator
Calculate total CBM, required pallets, estimated 20ft/40ft Dry container count, and load factor from box dimensions and quantity. Supports mixed cargo rows, metric/imperial input, major pallet standards, share URLs, and CSV export.
Label & QR Generator
Create A4/A6 label PDFs and QR codes from item names, lot codes, and handling instructions. Supports A6 single labels, A4 full-page labels, A4 4-up layouts, CSV bulk input, multilingual UI, and local-only processing.
Logistics Unit Converter
Convert weight, length, volume, temperature, and speed on one screen. Supports kg/lb, m/ft, m3/ft3, C/F/K, km/h, mph, knots, US gallons, Imperial gallons, short tons, and long tons.
Load Distribution Checker
Check front/rear and left/right imbalance from quick weight inputs, then review simple correction guidance. The 2-axle vehicle mode also gives a static axle-load estimate from load position. Supports kg/lb/t, m/ft, and share URLs.
Concentration Converter
Convert molarity, molality, wt%, vol%, and ppm with explicit assumptions. Enter density and molar mass only when needed, choose the ppm basis, and batch-convert pasted rows.
Chemical Unit Converter
Convert common chemical units for pressure, temperature, concentration (ppm↔mg/L), viscosity (cP↔mPa·s), and volume on one screen. Includes approximate/precise modes, formulas, copy actions, local history, and shareable URLs.
Dilution Calculator
Calculate stock and solvent volumes with C1V1=C2V2 from stock concentration, target concentration, and final volume. Generate serial dilution tables from step count and factors, with uL/mL/L switching, copy buttons, and rounding suggestions.
Tank Mix and Dilution
Calculate concentrate and water from spray volume, tank capacity, and dilution ratio or concentration. Supports multiple materials, rounding, and batch count output. This tool does not judge compatibility.
Spray Application Rate
Calculate spray application rate from travel speed, spray width, and nozzle flow (total flow or per-nozzle flow × count). Shows deviation from your target rate plus the required speed or flow adjustment for simple field calibration.
Seeding Rate Calculator
Calculate required seed count and seeding rate (kg/ha or lb/acre) from row spacing, plant spacing, germination, or target stand. Add thousand-seed weight or seeds per weight unit to estimate bags and purchase quantity.
Agri Unit Converter
Convert agricultural area, spray, and fertilizer units in one tap: ha↔acre, L/ha↔gal/acre, and kg/ha↔lb/acre. Includes favorites, history, significant digits, locale formatting, and offline reuse.
Irrigation Water Guide
A quick irrigation guide that shows a practical water range per watering event from crop type, soil, heat, mulch, and irrigation method. Use it as a guide only and adjust by checking soil moisture.
Soil pH Lime Calculator
Estimate a lime requirement range from current pH, target pH, and soil type. Adjust for calcitic lime, dolomitic lime, hydrated lime, or other materials with CCE/ECCE, and view kg/10a, kg/ha, t/ha, and lb/acre together.
Crop Yield Estimator
Estimate crop yield in kg or tonnes from plant count, average fruit weight, and fruits per plant. Convert the result into box count or container count, and compare min/avg/max ranges in one view.
NPK Fertilizer Calculator
Calculate required fertilizer rates from grades such as 10-10-10. Supports blending, loss rate, kg/ha to lb/acre, P/K to P2O5/K2O, and optional cost estimates.
Compost Converter
Convert dry matter (tDM), as-applied weight, and per-hectare rates from moisture content and bulk density. Works for cubic-meter-based compost handling too.
Harvest Lot Labels
Create box and container labels from lot numbers, harvest dates, field IDs, items, and grades. Export print-ready PDF or PNG with A4 or US Letter sheet layouts.
Box Label Maker
Create seafood box labels from product name, lot, catch date, weight, and storage temperature. Export A4 sheet PDF or PNG, switch between QR and Code128, import CSV in bulk, and adjust field names, order, units, and date formats for buyer rules.
Fish Box Loading Calculator
Estimate the maximum box count, layers, and leftover space from cargo-space dimensions and fish box or cooler dimensions. Includes floor rotation, stack limits, margin %, 2D layout preview, CSV/print memo, and shareable URLs.
Fish Yield Calculator
Calculate edible seafood weight, loss weight, effective cost per edible kg, and estimated servings from raw weight, yield percentage, or a loss breakdown. Save company standards, combine multiple lots, export CSV, and print.
Boat Fuel Cost Calculator
Estimate fuel use and fuel cost for a fishing trip from distance, average speed, fuel burn (L/h or L/nm), and fuel price. Add multiple legs, idle time, and a safety factor for wind, waves, and detours.
Brine Concentration Calculator
Calculate the salt needed from a target brine percentage. Switch between %w/w (weight %) and %w/v (weight/volume %). Includes initial salinity, g/oz display, and optional additives such as sugar.
Rope Length Calculator
Estimate rope length for mooring, anchoring, or buoy lines from depth, tide range, wave and wind factor, scope ratio, and extra allowance. Show minimum, recommended, and purchase-ready length in m or ft.
Fish Ice Calculator
Estimate required ice from fish weight, temperature, and transport time. Includes insulation and ice-type adjustments, shareable URLs, and CSV export.
Seafood Thawing Time
Estimate a seafood thawing time range from weight, thickness/shape, and method. Room-temperature thawing is not recommended. Includes short notes on drip and bacterial-growth risk.
Fish Length to Weight
Estimate fish weight from body length in cm or inches. Use preset or custom coefficients a and b, save coefficient sets in the browser, share them as JSON, derive a from one sample, fit a and b from multiple samples, and batch-calculate many fish at once.
Traceability QR Generator
Create traceability QR codes offline from lot data, review the text content, and verify scannability on one screen. No personal data required and nothing is uploaded.
Crop Rotation Planner
Plan fields, crops, and planting periods in annual and monthly views. Visualize fallow gaps, keep manual caution tags for same-family rotation notes, and export CSV, print PDF, or save local templates.
Density Calculator
Convert mass and volume using density. Supports units such as kg/L, g/mL, and lb/gal(US). Optional coefficient-based temperature correction, formula display, copy actions, and batch paste are included.
Stoichiometry Calculator
Calculate limiting reagent, excess amount, theoretical yield, and percent yield from reaction coefficients and input quantities in g, mol, or solution M×L. The page uses user-entered coefficients instead of automatic balancing.
Solution Recipe Calculator
Calculate required amounts in g and mL from the target concentration and final volume. Supports purity correction, multi-component recipes, x2/x10 scaling, print, CSV export, and shareable URLs.
Batch Scale-Up Calculator
Scale a batch while preserving formulation ratios. Adjust for loss and yield, round to a minimum charge increment, review deltas, and export the result as CSV or JSON with browser-only save.
Measurement Uncertainty Calculator
Estimate concentration and dilution uncertainty from weighing error, volume error, and related inputs. Convert tolerance notation to standard uncertainty, choose k factors such as k=2, review the main contributors, and copy a report-ready output.
Invisible Character Checker
Paste text to detect invisible characters instantly. Visualize ZWSP/NBSP/BOM/control characters with position details and clean copy presets. Browser-only processing with no upload.
Character Counter
Paste text and instantly see grapheme count, count excluding spaces/newlines, line count, UTF-8 bytes, code points, and full-width equivalent.
Base64 Encode/Decode
Convert text/files to Base64 or decode Base64. Supports Data URL splitting and UTF-8 text display. All processing stays in your browser.
SHA-256 Hash Calculator
Calculate SHA-256 directly in your browser. Generate and verify checksums from text and local files. Your data is not uploaded (Web Crypto API).
Container Loading Estimator
Estimate container loading capacity for 20ft/40ft/40HQ from box size, quantity, orientation rules, and pallet usage.
Wholesale to Retail Pricing
Calculate landed cost from wholesale price with FX, shipping allocation, duty, import tax, and fees, then estimate recommended retail price ranges by margin or markup.
Bundle Cost & Margin
For set cost calculation, assortment margin checks, and bundle pricing design. Calculate minimum price, gross profit, and gross margin from SKU mix, ratio, and unit cost. Supports shipping allocation and remainder handling.
Incoterms Compare
Compare Incoterms® 2020 by cost allocation, risk transfer, and document overview. Shows mode-specific cautions for sea, air, and multimodal shipments. Review FOB vs CIF vs DDP quickly and generate copy-ready trade text.
Volumetric Weight & CBM
Calculate volumetric weight (5000/6000/custom), CBM and estimated pallet count from box dimensions, weight and quantity. Supports mixed unit input and automatic conversion.
Picking Breakdown
Automatically calculate shortest picking breakdown from required quantity, units per case, and stock (case/each). Supports multi-lot stock, yield optimization, shortage alternatives, and no-open-case constraints.
Multi-Warehouse Allocation
Based on the inventory of multiple warehouses and the shipping cost coefficient for each destination zone, we can quickly suggest how many items to ship from which warehouse. We also support division failure and warehouse-specific pick fees.
Volume Discount Table
Generate a tiered pricing table from unit cost, minimum margin, and quantity breaks. Supports rounding, margin floor checks, currency formatting, and CSV export.
Payment Terms Calculator
2/10 Convert early payment discounts such as Net30 into annual interest rates (actual annual interest rates) and compare optimal payment terms including capital costs and fees. Supports parallel comparison of up to 3 plans. payment terms calculator / 2/10 net 30 calculator.
Credit Risk Checklist
The credit/collection risk is scored on a scale of 0 to 100 by manually inputting the transaction period, number of delays, and order increase/decrease. Recommended actions and recommended credit limits (ranges) are presented. No data transmission (calculated within the browser).
MOQ Carton Calculator
Automatically calculates three options: rounding up, rounding down, and minimum excess from MOQ (minimum order quantity), quantity (case pack), and desired quantity. A carton division calculation tool that supports SKU line addition and CSV bulk input.
Price Increase Impact
Estimate revenue and gross profit changes by customer x SKU, customer, and SKU from current and new prices plus quantities. Supports spreadsheet paste, CSV export, and shareable URLs.
SKU Rule Checker
Normalize product codes by checking SKU rules. Check for SKU duplication detection, full-width/half-width/hyphen spelling errors, prohibited characters, number of digits, and prefix violations all at once. Supports difference highlighting/warning only mode.
Packing Label Generator
Generate packing labels with box numbering like 1/12, SKU, quantity, and optional notes from CSV or table input. Supports A4 / US Letter, multiple label sizes, local-only processing, and reusable templates.
Molecular Weight Calculator
Enter a chemical formula such as C6H12O6 to calculate molar mass and elemental composition by mass. Supports parentheses and hydrates such as CuSO4·5H2O, plus copy, CSV, and shareable URLs.
Significant Figures and Rounding Checker
Suggest reporting precision and notation from measured values, resolution, standard deviation, and rounding rules. Includes LOD/LOQ reporting options, copy actions, presets, history, and shareable URLs.
pH / pOH Calculator
Convert H+, pH, and pOH with a simple calculator for education and field notes, with formulas and practical cautions.
Cash Rounding Calculator
Round cash amounts with 0.05 steps, nearest rounding, round up, round down, and other store rules. See the before value, rounded value, difference, and batch results in one place.
m²↔Tsubo↔Tatami↔m↔mm Converter
Convert m², tsubo, tatami, m, and mm with SI-based formulas. Set tatami dimensions for accurate conversion and generate fixed-decimal quick tables.
Rebar Pitch Calculator
Calculate effective length from total length and edge offsets, then convert between bar count and spacing. Includes equal/centered/flush layout rules, coordinate list, CSV/JSON/SVG export, and shareable URLs.
Right-Angle Layout Helper (Pythagorean + Diagonal Check)
Calculate a reference diagonal from side lengths or 3-4-5, then judge measured diagonals against tolerance. Includes recommended 3k/4k/5k values, bulk paste, and judgement table copy.
Anchor Bolt Layout
Calculate effective length from total length and left/right offsets, then convert between count and spacing. Includes equal/centered/flush layout rules, schematic drawing, coordinate table, TSV/CSV export, and shareable URLs.
Slope Grade Calculator
Convert slope values between rise/run, percent, degrees, and 1:n. Includes m/mm and ft/in display switches, downhill handling, one-click copy per result, and shareable links.
Tile & Flooring Layout Calculator
Estimate required tile count, edge cut widths, and waste rate from room and material dimensions. Compare options for minimum waste, visual balance, and tiny-cut avoidance, then review cut positions in a diagram.
Formwork Area Calculator
Calculate formwork area for columns, beams, walls, and slab edges. Apply opening deduction rules and deduction faces, then confirm net area and multiplier-based reference values.
Scaffolding Area Estimate
Estimate scaffolding area from perimeter, height, and coverage factor, and calculate mesh/protection accessory area with loss in one pass.
Voltage Drop Calculator (Quick)
Quickly calculate voltage drop (V/%) from voltage, current, one-way distance, and conductor conditions. Compare against an allowable threshold and review cable-size candidates when a standard set is selected.
Formulation Ratio Calculator
Build formulation tables from weight or volume ratios, scale to a target total, check min/max tolerances, handle density conversion and rounding, and export the result as CSV, TSV, or PDF.
Retail Staffing Calculator
Estimate required staff for peak periods from visitor volume by time slot and average service time. Adjust utilization, add a buffer for breaks or absences, and split headcount across checkout, sales floor, and stocking.
Margin & Markup Calculator
Calculate a selling price from target gross margin or reverse gross margin and markup from the current price. Includes packaging, shipping, payment fees, and price-ending optimization.
Discount Calculator
Calculate sale prices from the original unit price, quantity, and discount type. Supports percent-off deals, fixed discounts, second-item-half-off promotions, bundle pricing, quantity tiers, stacked discounts, and shareable URLs.
Currency Price Optimizer
Enter an exchange rate manually, convert a price, and round it to .99, .95, .00, whole-number, or custom endings. Review the converted price, final price, difference, comparison candidates, and share URL instantly.
Roof Area Calculator with Pitch
Calculate sloped roof area from plan dimensions and pitch (degrees/Rise:Run/%/sun). Includes overhang, section split totals, waste rate, share URL, and print output.
Material Loss Calculator
Calculate order quantity from net required amount with Waste% or Yield%, salvage rate, and pack-size rounding. See pre-round need, order count, and leftover for each row.
Safety Stock & Reorder Point
Estimate safety stock and reorder points from demand and lead time variability. Supports min/max estimation, low/medium/high service levels, and period-based calculations for seasonal demand.
EOQ Calculator
Calculate economic order quantity from annual demand, order cost, and holding cost. Supports MOQ, lot rounding, pasted tables for batch calculation, shareable URLs, and CSV export.
Paint Quantity Calculator
Enter area, coats, substrate roughness, waste rate, coverage, pack size, and unit price to calculate required L/gal, can count, and estimated cost instantly.
Pipe Dimensions Chart (Nominal ↔ OD/ID)
Compare Nominal/OD/ID/thickness by standard set. Keep source, standard name, and edition visible at all times, and print in A4 or Letter.
URL Encode/Decode
Convert URL encoding/decoding instantly in your browser. Switch between encodeURIComponent/encodeURI behavior, compare + vs %20, and detect possible double encoding.
QR Code Generator
Create QR codes for free from URLs or text, then download as SVG or PNG. Supports error correction and margin adjustment for better scanning.
Barcode & QR Parser
Paste scanned text to make barcode or QR contents readable. GS1 is parsed where possible, and you can copy the result as a table, JSON, or text. Everything stays in your browser.
Price Card Maker
Enter a product name, price, and SKU to generate store-ready price cards as PDF on A4 or US Letter. Supports Code128, EAN-13, and QR barcodes, plus CSV paste, template saving, and previous-session restore.
JSON Formatter
Free JSON pretty/minify tool with line and column error details, key sorting, indent options, and one-click copy. Processing runs fully in your browser.
CSV/TSV Converter
Convert CSV and TSV both ways (comma ↔ tab). A quote-aware CSV parser correctly handles commas and line breaks inside quoted fields, fully in your browser.
CSV Deduplicator
Remove duplicate CSV rows by selected key columns. Supports first-win, last-win, and non-empty merge with summary metrics for removed rows and duplicate groups.
CSV Editor
Preview CSV files in your browser, remove unwanted columns, split or merge columns, and reorder output columns. Files never leave your device, and you can download the edited CSV right away.
Tax Converter
Convert between tax-inclusive and tax-exclusive prices with a custom tax rate, tax-amount rounding, batch paste, TSV copy, and CSV export for VAT, GST, and Sales Tax workflows.
CSV to JSON Converter
Convert CSV to JSON by paste or upload. Toggle headers, type inference, and empty-cell handling (""/null/omit). Copy and .json download supported.
YAML ↔ JSON ↔ TOML Converter
Free YAML/JSON/TOML converter. Paste text to convert instantly with formatting, validation, copy, and download support. Everything runs in your browser.
Markdown Preview
Preview Markdown instantly in your browser. md to HTML conversion runs locally with no upload or storage. Copy and download HTML with one click.
Markdown TOC Generator
Generate a Table of Contents from Markdown headings. Choose H2-only or H2-H4, handle duplicate headings with suffixes, and copy editable output instantly.
Image Resizer / Compressor
Resize and compress images in your browser without uploading. Reduce photo file size and download instantly. Supports PNG/JPEG/WebP with quality control and side-by-side preview.
Image Converter
Convert WebP↔PNG and PNG↔JPEG directly in your browser. Adjust quality, handle transparency for JPEG, and download multiple results in one ZIP.
SVG Viewer
Paste raw SVG markup to preview the rendered result safely. Inspect viewBox, size details, and warnings, with all processing done locally in your browser.
Line Shuffle Tool
Randomly shuffle text lines (one line per item). Supports blank-line handling, fixed header line, and optional seed for reproducible output. Copy or save results in one click. Runs in your browser.
List Converter
Convert between bullet symbols (•, -, −) and numbered lists (1., 1)). Keep or align indentation, control existing numbering, and copy instantly.
Markdown Table Formatter
Paste Markdown tables and align column widths instantly. Keeps alignment markers like :---. Detects and formats only table-like blocks in mixed text.
Prefix/Suffix Adder
Add a prefix or suffix to every line in multiline text. Supports blank-line skipping, numbering, insertion after indentation, and insertion before trailing whitespace. Runs locally in your browser.
Quote Style Normalizer
Normalize mixed quotation marks into one target style. Handles nested quotes, apostrophes, prime-like marks, HTML/code protection, warnings, and settings-only share links.
Password Generator
Generate passwords locally using secure random values. No server transmission. Supports length, character sets, exclusions, copy, and strength estimation.
OGP Tag Generator
Generate OGP tags (og:title, og:image, og:description) and Twitter Card tags from form input. Copy ready-to-paste meta tags for your head section, with image-size guidance and cache refresh tips.
FAQ JSON-LD Generator
Generate FAQPage JSON-LD quickly. Enter multiple Q&A pairs, output as an array, copy with script tag, and follow testing steps. Rich result display is not guaranteed.
robots.txt Generator
Generate a robots.txt template with Allow/Disallow rules and Sitemap lines. Risky full-block settings are detected with strong warnings and confirmation before copy.
JSON Key Sorter
Sort JSON object keys A-Z, choose all-level or top-level scope, preserve array order, and format indentation in one pass for cleaner reviews.
Forestry Seedling Count & Spacing Calculator
Calculate required seedlings from area, target stems per hectare, survival rate, and supplement rate. Designed for forestry planting plans worldwide.
Drill Hole CSV Cleaner
Validate drillhole collar, survey, assay, and lithology CSVs locally in the browser. Catch depth reversals, overlaps, missing coordinates, and likely unit mistakes before export.
JSA / TBM Generator
Generate editable JSA / TBM drafts with representative hazards, controls, and PPE examples.
Dilution and Ore Loss Quick Calculator
Estimate dilution and ore loss from planned width, mined width, and boundary split error. Built for underground mining, short-term planning, and quick technical checks.
Ore Cutoff Grade Calculator
Estimate break-even cutoff grade from metal price, recovery, mining cost, processing cost, and G&A. Supports unit conversion, price scenario comparison, sensitivity analysis, and PDF export.
Harvest Readiness Memo
Organize Brix, firmness, skin color, days after bloom, and GDD into candidate harvest rows.
Charcoal Yield Calculator
Estimate charcoal, fines, ash, and residual loss from dry wood weight, kiln type, target charcoal grade, and feedstock group.
Orchard Canopy Volume Calculator (TRV)
Calculate TRV, spray volume, and pruning references from tree measurements.
Chill Requirement
Calculate chill hours and chill portions from hourly temperature records for orchard fruit, compare them to cultivar thresholds, and share the setup with CSV paste, JSON export, and a lightweight URL.
Silkworm Batch Calendar
Enter a start date and batch type to show only the next silkworm rearing step from egg placement to dried cocoon. It supports multilingual labels, shareable URLs, and local saving.
Cocoon Grading Memo
Record appearance, size, defects, shell percent, filament length, and reelability per lot, then build a quick rank and comparison table entirely in the browser. Supports multilingual labels, URL sharing, CSV / JSON export, and local saving.
Silkworm Cocoon Drying and Storage Assistant
Record cocoon drying start times, methods, interim checks, storage locations, and no-mix conditions. Local saving, CSV / JSON export, and printing are supported, with a multilingual UI for use worldwide.
Silk Reeling Logbook
Record sericulture reeling lots with machine conditions, water temperature, water quality notes, thread breaks, operators, and yield. Track dry cocoon storage, storage, boiling, reeling, re-reeling, water management, and machine maintenance in one local-first logbook with multilingual labels, unit-aware history, and CSV / JSON export.
Silkworm Target Board
A target board for silkworm rearing that shows target temperature, humidity, ventilation notes, and actual deviations for each stage. It supports local CSV import, manual entry, printing, and temperature-unit switching.
Silkworm Yield and Cost Simulator
Estimate batch revenue, cost, and profit from leaf amount, rearing days, mortality, cocoon yield, grading ratios, reeling yield, and labor time. Works entirely in the browser with multilingual, multi-currency, and multi-unit support.
Silkworm Feeding Planner (Host Plant Templates)
Plan silkworm feeding notes with host plant templates, scientific names, aliases, and local browser storage.
Fruit Thinning / Crop Load Calculator
Estimate how many fruits to leave per tree from tree age, vigor, target fruit size, and target yield. Supports weight and diameter input, and helps plan orchard thinning.
GDD Growth Stage
Calculate cumulative GDD from budbreak or bloom dates and daily temperature CSVs, then show the current growth stage and harvest forecast. Built for orchard planning without a weather API.
Orchard Irrigation Runtime Calculator
Estimate per-tree irrigation water from tree age, spacing, and soil, then calculate one runtime from dripper flow and count.
Orchard Pollination
Plan orchard pollinizer mixes from the main cultivar, pollinizer cultivar, bloom overlap, and target ratio. Built for apples, pears, sweet cherries, sour cherries, almonds, and multilingual orchard workflows.
Orchard Row Shade Simulator
Visualize orchard shade bias from latitude, slope aspect, row direction, tree height, and canopy width in your browser. Switch between annual bias, high sun, equinox, and low sun with a true-north azimuth convention and a multilingual UI for orchards around the world.
Orchard Labor Estimator
Estimate orchard labor and completion time from area, tree count, work type, and throughput. Supports pruning, thinning, harvest, bagging, mowing, and spraying with tree-based and area-based planning.
Orchard Planting
Calculate orchard tree count, estimated rows, pollinizer ratio, and spare seedlings from area and spacing inputs. Supports m², ha, acre, m, ft, and in.
Orchard Risk Check
Quickly estimate orchard sunburn and cracking attention from temperature, sunlight, irrigation status, and fruit exposure. It runs entirely in your browser and supports shareable URLs and draft restore.
Frost and Heat Alert Check
Show orchard frost and heat alert levels from forecast low/high, humidity, wind, sun exposure, and stage. A quick check built to work across languages.
Plot Survey Logbook
Record plot-by-plot species, DBH, height, health, and regeneration, then export CSV locally.
Moisture Removal and Target Weight Calculator
Calculate water removal and target weight from current weight and moisture in the browser.
Wood Moisture Content and Green Weight Converter
Convert moisture content, dry weight, green weight, and density in one forestry tool.
Forestry Tools
Measure plot area, perimeter, and centroid from GPS point series, manual coordinates, or local GPX, GeoJSON, and KML files. Browser-only, basemap-free, and no data upload.
Charcoal Kiln Batch Log
Record one charcoal kiln batch with charge amount, times, notes, and yield, then export CSV or JSON locally.
Charcoal Kiln Cycle Timer
Track charcoal kiln phases in the browser. Use local notifications, device-only storage, and offline-friendly timing for field work.
Charcoal Particle Size and Fines Ratio Manager
Check shipping readiness and route charcoal lots to the right use class from sieve results and fines ratio.
Silkworm Symptom Triage Note
Structured observation notes for silkworm rearing. Record symptoms, onset, mortality, recent temperature and humidity changes, and mulberry leaf condition instead of guessing a disease name.
Sericulture Lot Passport
Create a local traceability passport for sericulture that links egg lots, mulberry lots, rearing rooms, cocoon harvest dates, drying conditions, and reeling batches. Works offline, supports multilingual UI, and outputs QR, print, PNG, JSON, and shareable URLs.
Sericulture Hygiene Reset Log
A sericulture hygiene reset log. Check the sequence from previous batch end to disposal, washing, disinfection, drying, and next batch start, and record temperature, humidity, mulberry leaf quality, crowding, ventilation, and floor cleaning for every cycle. Supports multilingual UI, local storage, CSV/JSON export, and printing.
Concrete Truck Load Calculator
Add up rectangular, trapezoid, circular, and cylindrical concrete volumes, apply waste %, and estimate truck loads with round-up logic. Supports m³ and yd³. Truck count is an estimate.
Drying and Recoat Timing Planner
Adjust drying, recoat, and masking timings from data-sheet values based on site temperature. Supports C/F switching, proposal-ready PDF export, and shareable URLs.
Tolerance Checker
Judge measurements against target+/-tol or upper/lower criteria with automatic reason output. Supports column-fixed mm/m units, batch CSV checks, and result CSV export.
Trình tạo bản nháp thông số và dự toán sơn
Nhập diện tích, nền, mức xuống cấp, độ bền mục tiêu và độ bóng hoàn thiện để tạo bản nháp thông số sơn với hạng mục công việc, chuẩn bị nền, các bước sơn phủ, phần loại trừ và số lượng ước tính cho báo giá.
TDS/SDS Quick Reader
Upload a TDS or SDS PDF and pull out coverage, recoat time, dilution ratio, application temperature, VOC, and precautions in a clean browser-only view.
Exterior & Interior Color Simulator
Upload a photo to simulate exterior and interior color changes, signage, and UI-style layouts, then check contrast using 4.5:1 for normal text, 3:1 for large text, and 3:1 for UI elements.
Dew Point Checker
Estimate dew point from air temperature and relative humidity, then judge painting workability from the gap to the surface temperature. Supports metric and imperial inputs, planned-time notes, share links, and browser-only processing.
Paint Defect Wizard
Diagnose coating defects by combining the visible symptom with temperature, humidity, dew-point spread, substrate moisture, surface contamination, and application conditions.
Paint Surface Area Calculator
Calculate paintable area for walls, roof pitch, tanks, pipes, steel sections, fences, and direct inputs in one browser-based tool. Pass the net area directly to the paint quantity calculator.
VOC Compliance
Enter country or region, coating category, and VOC value to get applicable regulations, limits, and label notes. Built-in packs cover EPA architectural coatings and EU/EEA decorative paints and varnishes.
WFT/DFT Coating Coverage Calculator
Back-calculate required WFT, theoretical coverage, and actual usage from target DFT, volume solids, loss rate, area, coats, and area share. Built for industrial coating work with microns/mils support.
JSON Compare
Compare two JSON documents semantically in your browser, reduce array noise with match keys and tolerance, and export JSON Patch or JSON Merge Patch without uploading data.
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Timetable Generator
Generate a class timetable from subject, teacher, room, and day preferences, then review collisions and unplaced lessons.
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Forestry Road Slope Checker
Calculate slope from two points or from a route point list, then highlight hazardous segments. Built for forestry road networks, skid trails, and cable yarding planning.
Firewood Equipment Pre-Start Inspection Log
Record pre-start inspections for chainsaws, log splitters, belts, blades, and PPE in a browser-only log. Replace paper check sheets and reuse the same workflow across sites worldwide.
Charcoal Manufacturing Safety Check Log
Safety check log for charcoal production. Record CO, fire, burns, dust, ventilation, and PPE every time.
Underground Ventilation Airflow Calculator
Mining tool for estimating required airflow from workers, diesel equipment, and local minimum airflow.
Mining Water Balance Calculator
Build a quick site water balance from inflow, drainage, reuse, evaporation, and storage change.
Simple Ore Blend Grade Calculator
Instantly calculate average grade, contained metal, and the gap to a target grade across multiple ore sources.
XYZ and Azimuth/Dip Converter
Convert azimuth, dip, and length to XYZ, or reverse XYZ back to azimuth and dip. Includes north-reference notes and CSV batch conversion.
Open Pit Bench Design Checker
Check bench height, berm width, face angle, and overall slope angle in a 2D open pit section.
RQD / Core Recovery Calculator
Check RQD, core recovery, and core loss for each drill core interval.
Mining Sample Chain of Custody Logbook
Record sample collection, packing, transport, and lab receipt locally. Generate sample IDs, handover logs, label print data, and QR codes without sending records to the cloud.
Truck-Shovel Cycle Time Productivity Calculator
Calculate cycle time and productivity from load time, haul distance, speed, and wait time.
Tailings Storage Facility Inspection Checklist
Record tailings facility inspections with photos, status labels, and a PDF-ready report.
Tree Height and Slope Clinometer
Estimate tree height and slope on site with a browser-based clinometer. Use your phone angle sensor or manual input, save records on the device only, and work offline when needed.
Firewood Size and Specification Checker
Check whether a firewood lot fits retail, business, or charcoal bands from length, thickness, split condition, and moisture.
Firewood Yield Estimator
Estimate firewood pieces, stacked volume, and bag count from log diameter, length, defect rate, and target firewood size. Built for field planning and estimates with multilingual and metric/imperial support.
Biomass / Carbon
Estimate above-ground biomass, carbon, and CO2e from DBH, tree height, wood density, and species group. Use built-in reference equations, save custom coefficients, and share the result by URL, JSON, or CSV.
Tree Felling Safety Zone Calculator
Estimate retreat distance and exclusion radius from tree height, slope, retreat direction, and nearby obstacles. This browser-only tool is a conservative aid for field judgment, not a legal determination.
Logging Productivity Calculator
Turn daily work logs into productivity, cost, and quote estimates with local currency settings.
Standing Tree Volume Calculator
Calculate standing tree volume from DBH, height, form factor, and formula presets, with m³ / ft³ / board feet switching.
Log Bucking Optimizer
Plan where to cut a stem from length, taper, defects, product lengths, quality classes, and prices.
Wood Fuel Heat Value Converter
Compare practical heat value for firewood and charcoal by kg, bag, and volume from moisture content and bulk density.
Basal Area and Stem Density Calculator
Calculate basal area per hectare or acre, stem density, and average DBH (QMD) from fixed plot and BAF angle-gauge surveys. Switch between metric and imperial units, share state by URL, and keep everything multilingual.
Forest Stand Metrics Quick Calculator
Quickly check stem density, basal area, and survival from plot area, current stems, and target density.
Log Volume and Load Calculator
Calculate log volume from small-end diameter, butt-end diameter, and length. Estimate load weight from density, compare truck capacity, and edit volume rules and density tables for regional workflows.
Log Volume Calculator
Calculate log volume from length, butt diameter, and top diameter with Smalian, Huber, or Newton.
Wrap Text
Insert line breaks every N characters to format text. Supports preserving/reflowing existing line breaks, wrapping by whitespace, punctuation-priority wrapping, and local browser-only processing.
App / System Rough Estimate
Estimate app and system effort, duration, and cost from screens, roles, notifications, and integrations in the browser.